Description: Remove usages of pkg_resources
 pkg_resources are no longer available in Python 3.12 due to setuptools
 removal from the default installation. This patch replaces the usages of
 pkg_resources with importlib.resources.
Author: Vladimir Petko <vladimir.petko@canonical.com>
Bug: https://github.com/PacificBiosciences/pbcore/pull/126
Bug-Debian: https://bugs.debian.org/1093230
Bug-Ubuntu: https://bugs.launchpad.net/ubuntu/+source/python-pbcore/+bug/2095040
Last-Update: 2025-01-15

--- a/pbcore/data/datasets/__init__.py
+++ b/pbcore/data/datasets/__init__.py
@@ -1,7 +1,7 @@
 """Doctest resources"""
 
 import os
-from pkg_resources import Requirement, resource_filename
+from importlib import resources
 
 XML_FILES = ["alignment.dataset.xml",  # 0
              "barcode.dataset.xml",
@@ -33,8 +33,10 @@
 
 
 def _getAbsPath(fname):
-    return resource_filename(Requirement.parse('pbcore'),
-                             'pbcore/data/datasets/%s' % fname)
+    with resources.as_file(
+        resources.files('pbcore') /
+            'data/datasets' / fname) as ret:
+        return str(ret)
 
 
 def getXml(no=0):
--- a/pbcore/data/__init__.py
+++ b/pbcore/data/__init__.py
@@ -1,4 +1,4 @@
-from pkg_resources import Requirement, resource_filename
+from importlib import resources
 
 MOVIE_NAME_14 = "m110818_075520_42141_c100129202555500000315043109121112_s1_p0"
 MOVIE_NAME_20 = "m130522_092457_42208_c100497142550000001823078008081323_s1_p0"
@@ -9,7 +9,10 @@
 
 
 def _getAbsPath(fname):
-    return resource_filename(Requirement.parse('pbcore'), 'pbcore/data/%s' % fname)
+    with resources.as_file(
+       resources.files('pbcore') /
+            'data' / fname) as ret:
+        return str(ret)
 
 
 def getCCSBAM():
--- a/pbcore/__init__.py
+++ b/pbcore/__init__.py
@@ -1,6 +1,6 @@
-import pkg_resources
+from importlib.metadata import Distribution, PackageNotFoundError
 
 try:
-    __VERSION__ = pkg_resources.get_distribution('pbcore').version
-except Exception:
+    __VERSION__ = Distribution.from_name('pbcore').version
+except PackageNotFoundError:
     __VERSION__ = 'unknown'
--- a/pbcore/chemistry/chemistry.py
+++ b/pbcore/chemistry/chemistry.py
@@ -6,7 +6,7 @@
 import xml.etree.ElementTree as ET
 import os.path
 
-from pkg_resources import Requirement, resource_filename
+from importlib import resources
 
 
 class ChemistryLookupError(Exception):
@@ -35,12 +35,16 @@
 
 def _loadBarcodeMappings():
     try:
-        mappingFname = resource_filename(Requirement.parse(
-        'pbcore'), 'pbcore/chemistry/resources/mapping.xml')
+        mappingFnameContext = resources.as_file(
+            resources.files('pbcore') /
+                'chemistry/resources/mapping.xml')
+        with mappingFnameContext as mappingFname:
+            mappings = _loadBarcodeMappingsFromFile(mappingFname)
     except:
         mappingFname = os.path.join(os.path.dirname(__file__),
-        'resources/mapping.xml')
-    mappings = _loadBarcodeMappingsFromFile(mappingFname)
+            'resources/mapping.xml')
+        mappings = _loadBarcodeMappingsFromFile(mappingFname)
+
     updMappingDir = os.getenv("SMRT_CHEMISTRY_BUNDLE_DIR")
     if updMappingDir:
         import logging
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -11,12 +11,13 @@
 # All configuration values have a default; values that are commented out
 # serve to show the default.
 
-import pkg_resources
 import sys, os
 
+from importlib.metadata import Distribution, PackageNotFoundError
+
 try:
-    __VERSION__ = pkg_resources.get_distribution('pbcore').version
-except Exception:
+    __VERSION__ = Distribution.from_name('pbcore').version
+except PackageNotFoundError:
     __VERSION__ = 'unknown'